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path: root/drivers/iommu/io-pgtable-arm.c
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Diffstat (limited to 'drivers/iommu/io-pgtable-arm.c')
-rw-r--r--drivers/iommu/io-pgtable-arm.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index b34b00fadc45..87def58e79b5 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -130,7 +130,7 @@
/* IOPTE accessors */
#define iopte_deref(pte,d) __va(iopte_to_paddr(pte, d))
-#define iopte_type(pte,l) \
+#define iopte_type(pte) \
(((pte) >> ARM_LPAE_PTE_TYPE_SHIFT) & ARM_LPAE_PTE_TYPE_MASK)
#define iopte_prot(pte) ((pte) & ARM_LPAE_PTE_ATTR_MASK)
@@ -151,9 +151,9 @@ static inline bool iopte_leaf(arm_lpae_iopte pte, int lvl,
enum io_pgtable_fmt fmt)
{
if (lvl == (ARM_LPAE_MAX_LEVELS - 1) && fmt != ARM_MALI_LPAE)
- return iopte_type(pte, lvl) == ARM_LPAE_PTE_TYPE_PAGE;
+ return iopte_type(pte) == ARM_LPAE_PTE_TYPE_PAGE;
- return iopte_type(pte, lvl) == ARM_LPAE_PTE_TYPE_BLOCK;
+ return iopte_type(pte) == ARM_LPAE_PTE_TYPE_BLOCK;
}
static arm_lpae_iopte paddr_to_iopte(phys_addr_t paddr,
@@ -280,7 +280,7 @@ static int arm_lpae_init_pte(struct arm_lpae_io_pgtable *data,
/* We require an unmap first */
WARN_ON(!selftest_running);
return -EEXIST;
- } else if (iopte_type(pte, lvl) == ARM_LPAE_PTE_TYPE_TABLE) {
+ } else if (iopte_type(pte) == ARM_LPAE_PTE_TYPE_TABLE) {
/*
* We need to unmap and free the old table before
* overwriting it with a block entry.
@@ -450,10 +450,6 @@ static int arm_lpae_map(struct io_pgtable_ops *ops, unsigned long iova,
arm_lpae_iopte prot;
long iaext = (s64)iova >> cfg->ias;
- /* If no access, then nothing to do */
- if (!(iommu_prot & (IOMMU_READ | IOMMU_WRITE)))
- return 0;
-
if (WARN_ON(!size || (size & cfg->pgsize_bitmap) != size))
return -EINVAL;
@@ -462,6 +458,10 @@ static int arm_lpae_map(struct io_pgtable_ops *ops, unsigned long iova,
if (WARN_ON(iaext || paddr >> cfg->oas))
return -ERANGE;
+ /* If no access, then nothing to do */
+ if (!(iommu_prot & (IOMMU_READ | IOMMU_WRITE)))
+ return 0;
+
prot = arm_lpae_prot_to_pte(data, iommu_prot);
ret = __arm_lpae_map(data, iova, paddr, size, prot, lvl, ptep, gfp);
/*
@@ -554,7 +554,7 @@ static size_t arm_lpae_split_blk_unmap(struct arm_lpae_io_pgtable *data,
* block, but anything else is invalid. We can't misinterpret
* a page entry here since we're never at the last level.
*/
- if (iopte_type(pte, lvl - 1) != ARM_LPAE_PTE_TYPE_TABLE)
+ if (iopte_type(pte) != ARM_LPAE_PTE_TYPE_TABLE)
return 0;
tablep = iopte_deref(pte, data);
@@ -1094,7 +1094,6 @@ static void __init dummy_tlb_add_page(struct iommu_iotlb_gather *gather,
static const struct iommu_flush_ops dummy_tlb_ops __initconst = {
.tlb_flush_all = dummy_tlb_flush_all,
.tlb_flush_walk = dummy_tlb_flush,
- .tlb_flush_leaf = dummy_tlb_flush,
.tlb_add_page = dummy_tlb_add_page,
};